I am having trouble with masking/wipeout for blocks (such as detail bubbles) on plan drawings. I have tried the masking block, but they only seem to work with AEC objects. I also tried to add a wipeout to the block definition when creating the tool through the content wizard, but that crashes AutoCAD when I try to insert it from the Design Center. There has to be an easy way to do this, but I can't figure it out. Any help would be greatly appreciated. Thanks.